system sporadically hangs on shutdown after switching to WITH_NEW_XORG

[Konstantin Belousov]

On Sun, Jun 16, 2013 at 08:06:21PM +0200, Michiel Boland wrote:
> On 06/16/2013 19:46, Konstantin Belousov wrote:
> > On Sun, Jun 16, 2013 at 07:12:33PM +0200, Michiel Boland wrote:
> >> On 06/16/2013 17:37, Konstantin Belousov wrote:
> >> [...]
> >>> I do not see anything related to i915 in the core.txt you provided.
> >>>
> >>> Next time the machine hangs, start with the output of ps command from
> >>> ddb and 'show allpcpu', together with 'alltrace'.
> >>>
> >>
> >> Ok, I captured 'ps', 'show allpcpu' and 'alltrace' from a stuck shutdown. I've
> >> appended it to my core.txt. (See previous e-mail.) (Note that the ddb commands
> >> are from a different session - so the ddb output may not match with the kgdb
> >> output.)
> >>
> >
> > Hm, how do you initiate the shutdown ? Show the exact command.
> > Also, from the same moment of the hung system, enter the ddb and
> > again do ps, alltrace and 'x rebooting'.
> >
> 
> The exact command to generate the hangs from which I created the reports was
> 
> 'shutdown -r now'
> 
> FWIW - the saved core from the ddb-induced panic has
> 
> (kgdb) print rebooting
> $1 = 1
I explicitely asked you to provide me with the consistent ps/alltrace
and 'x rebooting' output.  What you did is useless.

In the ddb trace you appended, there is no thread which executes
the reboot(2) system call.
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